Carbon nanotubes with platinum nano-islands as glucose biofuel cell electrodes
- Authors
- Ryu, Jongeun; Kim, Hak-Sung; Hahn, H. Thomas; Lashmore, David
- Issue Date
- Mar-2010
- Publisher
- ELSEVIER ADVANCED TECHNOLOGY
- Keywords
- Glucose; Biofuel cell; Intense pulsed light; Carbon nanotubes; Photothermal dewetting
- Citation
- BIOSENSORS & BIOELECTRONICS, v.25, no.7, pp.1603 - 1608
- Indexed
- SCIE
SCOPUS
- Journal Title
- BIOSENSORS & BIOELECTRONICS
- Volume
- 25
- Number
- 7
- Start Page
- 1603
- End Page
- 1608
- URI
- https://scholarworks.bwise.kr/hanyang/handle/2021.sw.hanyang/175375
- DOI
- 10.1016/j.bios.2009.11.019
- ISSN
- 0956-5663
- Abstract
- A novel method using intense pulsed light (IPL) for the metal nano-island formation on carbon nanotube (CNT) was introduced. The IPL-induced photothermal dewetting process improved platinum (Pt) catalyst utilization by transforming nano-islands from Pt film on CNT and increasing the surface area for the subsequent sputtering. The irradiation of high intensity of light on the Pt film causes surface-energy-driven diffusion of Pt atoms and forms the array of nano-islands on CNT. The thickness of Pt film can change the size of nano-islands. Cyclic voltammetry showed a dramatically improved glucose oxidation at the IPL morphology modified Pt-CNT electrode compared to the Pt sputtered CNT electrode without IPL irradiation. The power densities of glucose/air biofuel cell based on the morphology modified Pt-CNT electrode and the as-sputtered Pt-CNT electrode were 0.768 mu W/cm(2) and 0.178 mu M/cm(2), respectively. The biofuel cell based on morphology modified Pt-CNT electrode showed highly stable output in long-term performance. The power density dropped 14.1% in 30 days. Efforts are underway to improve the interface transfer to achieve higher potential and current output.
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